This examination of the role and potential for replication in economics points out the paucity of both pure replication -- checking on others' published papers using their data -- and scientific replication -- using data representing different populations in one's own work or in a Comment....

What impact do social preferences have in market-type settings where individuals can sort in response to relative prices? We show that sorting behavior can distinguish between individuals who like to share and those who share but prefer to avoid the sharing environment altogether. In four...

I discuss the role of economic theory in empirical work in development economics with special emphasis on general equilibrium and political economy considerations. I argue that economic theory plays (should play) a central role in formulating models, estimates of which can be used for...

This paper asks whether the results obtained from using the standard approach to testing the influential Grossman and Helpman %u201Cprotection for sale (PFS)%u201D model of political economy might arise from a simpler setting. A model of imports and quotas with protection occurring in response...

This paper presents the econometric approach to causal modeling. It is motivated by policy problems. New causal parameters are defined and identified to address specific policy problems. Economists embrace a scientific approach to causality and model the preferences and choices of agents to...

Jim Tobin, who died on March 11, 2002 at the age of 84, was one of giants of economics of the second half of the twentieth century and the greatest macroeconomist of his generation. Tobin's influence on macroeconomic theory is so pervasive - so much part of our professional 'acquis' - that many...

We develop a model of international trade with heterogeneous firms and endogenous quality choices. Producing higher quality involves returns to scale, it is intensive in skilled labor and high-quality inputs. Firms' quality choices are interrelated because firms sell their goods to consumers and...

This article reviews the state of the international trade literature on multinational firms. This literature addresses three main questions. First, why do some firms operate in more than one country while others do not? Second, what determines in which countries production facilities are...

One feature of globalization is that countries are increasingly specialized in either innovation or in production. To understand the forces behind this specialization and its welfare consequences, we develop a monopolistic competition model of trade and multinational production (MP) in which...

Fair Trade is a labeling initiative aimed at improving the lives of the poor in developing countries by offering better terms to producers and helping them to organize. In this survey, we provide a critical overview of the economic theory behind Fair Trade, describing the potential benefits and...